{"title":"Peptides","description":"\u003cp\u003eSignal peptides stimulate collagen synthesis and have the strongest clinical backing in this family of actives (documented split-face trials). Copper peptide (GHK-Cu) works via copper, an enzymatic cofactor, though its skin penetration remains uncertain. Never combine with pure vitamin C or direct acids in the same application — the reaction degrades both.\u003c\/p\u003e\n\u003ch2\u003eHow to choose\u003c\/h2\u003e\n\u003cp\u003eFor mature skin that cannot tolerate retinoids, or during pregnancy and breastfeeding, peptides are the best-documented anti-aging alternative. As a first step, a watery \"booster\" serum goes on right after cleansing, morning and evening. For the eye area, choose a dedicated cream or hydrogel patch. Peptides combine well with niacinamide, hyaluronic acid and ceramides; keep pure vitamin C and acid exfoliants for another time of day.\u003c\/p\u003e\n\u003ch2\u003ePair it with\u003c\/h2\u003e\n\u003cp\u003eBrowse our \u003ca href=\"\/en-us\/collections\/signes-de-lage\"\u003esigns of aging\u003c\/a\u003e selection, our \u003ca href=\"\/en-us\/collections\/retinol\"\u003eretinol\u003c\/a\u003e products for skin that tolerates it, and our \u003ca href=\"\/en-us\/collections\/collagene\"\u003ecollagen\u003c\/a\u003e products, often paired with peptides in Korean formulas.\u003c\/p\u003e","products":[{"product_id":"cosrx-advanced-snail-peptide-eye-cream-25ml","title":"COSRX Advanced Snail Peptide Eye Cream 25ml — Snail Mucin Eye Cream","description":"\u003cp\u003eA rich yet non-sticky texture, designed for the delicate under-eye area, that absorbs without tugging or leaving a film.\u003c\/p\u003e\n\u003ch2\u003eWhy we love it\u003c\/h2\u003e\n\u003cp\u003eIt combines snail secretion filtrate with a \u003ca href=\"\/en-us\/collections\/peptides\"\u003epeptide\u003c\/a\u003e complex: signal peptides have the strongest clinical grounding in the peptide family, but how well the larger molecules actually penetrate the skin is still debated, a limitation documented in the research. The mucin brings hydration and comfort to an area that lacks sebaceous glands, with a gradual smoothing effect rather than an immediate result. A targeted treatment designed for dark circles and a tired-looking eye area, to complement a hydration\/barrier routine.\u003c\/p\u003e\n\u003ch2\u003eHow to use it\u003c\/h2\u003e\n\u003cp\u003ePat morning and evening around the eye, on cleansed skin, before cream, using a rice-grain amount per eye. Expert note: if you have a known allergy to dust mites or mollusks, a patch test on a small area is recommended before first use; also, copper peptides should not be applied at the same time as pure vitamin C or a direct acid (a reaction that degrades both actives) — it's best to separate these steps between morning and evening.\u003c\/p\u003e\n\u003ch2\u003eWho it's for\u003c\/h2\u003e\n\u003cp\u003eDehydrated eye contours or ones marked by fatigue, first fine lines, and sensitive skin looking for a fragrance-free targeted treatment. Find our other \u003ca href=\"\/en-us\/collections\/bave-descargot-mucine\"\u003esnail mucin\u003c\/a\u003e products.\u003c\/p\u003e","brand":"COSRX","offers":[{"title":"Default Title","offer_id":53801757016330,"sku":"COSRX-SNAILEYE-25","price":24.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/7152\/3338\/files\/cosrx-snail-peptide-eye-cream.jpg?v=1790197347"},{"product_id":"cosrx-the-peptide-collagen-hydrogel-eye-patch","title":"COSRX The Peptide Collagen Hydrogel Eye Patch, 60 patches","description":"\u003cp\u003eA thin, cool-to-the-touch hydrogel patch that hugs the eye contour perfectly without slipping.\u003c\/p\u003e\n\u003ch2\u003eWhy we love it\u003c\/h2\u003e\n\u003cp\u003eIt combines \u003ca href=\"\/en-us\/collections\/peptides\"\u003epeptides\u003c\/a\u003e and collagen: signal peptides have the strongest clinical evidence in their family, but skin penetration remains a documented limitation for larger molecules, including collagen, which is too large to cross the skin barrier in depth — here its role is mainly to form a surface film and visually plump. The hydrogel brings a coolness that visibly de-puffs the eye area and a hydrating film that temporarily smooths dehydration lines. A duo format designed for a 10-to-20-minute pause rather than a daily base-routine step.\u003c\/p\u003e\n\u003ch2\u003eHow to use it\u003c\/h2\u003e\n\u003cp\u003eApply to cleansed skin, leave on for 10 to 20 minutes, then remove and massage the remaining serum in until absorbed. Expert note: copper peptides should not be combined with pure vitamin C or a direct acid applied at the same time (a reaction that degrades both actives). Keep the tub in the fridge for an extra cooling effect on waking.\u003c\/p\u003e\n\u003ch2\u003eWho it's for\u003c\/h2\u003e\n\u003cp\u003eTired eyes, dehydration circles, puffiness on waking, and anyone who wants a quick step before an occasion. Suitable for sensitive skin. Find our other \u003ca href=\"\/en-us\/collections\/collagene\"\u003ecollagen\u003c\/a\u003e products.\u003c\/p\u003e","brand":"COSRX","offers":[{"title":"Default Title","offer_id":53801758032138,"sku":"COSRX-PEPTIDEPATCH","price":21.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/7152\/3338\/files\/cosrx-peptide-collagen-eye-patch.jpg?v=1790197347"},{"product_id":"sungboon-editor-silk-peptide-egf-intensive-ampoule-40ml","title":"Sungboon Editor Silk Peptide EGF Intensive Ampoule 40ml","description":"\u003cp\u003eA fluid ampoule packed with golden threads visible to the naked eye, which glides over the skin and leaves a silky finish with no tugging — a texture designed for an immediate lifting feel on contact.\u003c\/p\u003e\n\u003ch2\u003eWhy we love it\u003c\/h2\u003e\n\u003cp\u003eSilk peptide (sericin) softens and smooths surface texture, while a complex of 13 peptides (including a cosmetic ingredient the brand labels \"EGF\", not to be confused with an injectable medical growth factor) and two sizes of collagen threads aim to support the skin's perceived firmness. Signal peptides are among the most clinically documented anti-aging actives, with one caveat: never combine them with pure vitamin C or an acid exfoliant in the same application, as the reaction can degrade both actives. Sungboon Editor reports internal clinical tests on several areas of the face (eye contour, smile lines); we found no independent publication to verify these figures, so we describe the formula without repeating the brand's percentage claims.\u003c\/p\u003e\n\u003ch2\u003eHow to use it\u003c\/h2\u003e\n\u003cp\u003eApply 2 to 3 drops to face and neck after toner, morning and\/or evening, patting until absorbed before cream. The collagen threads melt on contact with the skin; do not rub. Keep pure vitamin C and acids for another time of day.\u003c\/p\u003e\n\u003ch2\u003eWho it's for\u003c\/h2\u003e\n\u003cp\u003eMature skin looking for firmness and radiance, skin that cannot tolerate retinol, and anyone who wants an anti-aging alternative usable during pregnancy (peptides do not carry the retinoid contraindication). A natural complement to the \u003ca href=\"\/en-us\/collections\/peptides\"\u003ePeptides\u003c\/a\u003e range and our \u003ca href=\"\/en-us\/collections\/signes-de-lage\"\u003esigns of aging\u003c\/a\u003e selection.\u003c\/p\u003e","brand":"Sungboon Editor","offers":[{"title":"40 ml","offer_id":53801758228746,"sku":"SUNGBOON-EGFAMPOULE-40","price":15.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/7152\/3338\/files\/sungboon-editor-silk-peptide-egf-intensive-ampoule-40ml.jpg?v=1790197362"},{"product_id":"cosrx-the-6-peptide-skin-booster-serum-150ml","title":"COSRX The 6 Peptide Skin Booster Serum 150ml","description":"\u003cp\u003eA water-textured serum, as light as a toner, that slots in as the very first step after cleansing.\u003c\/p\u003e\n\u003ch2\u003eWhy we love it\u003c\/h2\u003e\n\u003cp\u003eFormulated with six selected \u003ca href=\"\/en-us\/collections\/peptides\"\u003epeptides\u003c\/a\u003e: the signal peptide family has the strongest clinical evidence among anti-aging actives, even though skin penetration remains a documented limitation for larger molecules. The large 150 ml format and watery texture allow generous application, morning and evening, without counting drops — the Korean \"booster\" spirit, where consistency matters more than concentration. A base designed to prep the skin before the next essence or serum, in the skip-care spirit.\u003c\/p\u003e\n\u003ch2\u003eHow to use it\u003c\/h2\u003e\n\u003cp\u003eApply morning and evening, as the very first step after cleanser, before essence or cream, patting in with your hands or a cotton pad. Expert note: copper peptides should not be applied at the same time as pure vitamin C or a direct acid (a reaction that degrades both actives) — separate these steps between morning and evening instead. Compatible with niacinamide, hyaluronic acid and ceramides.\u003c\/p\u003e\n\u003ch2\u003eWho it's for\u003c\/h2\u003e\n\u003cp\u003eSkin that wants a first approach to peptides without a rich texture, combination to oily skin looking for a lightweight anti-aging step, and skin that cannot tolerate retinoids. Suitable for sensitive skin. Find our \u003ca href=\"\/en-us\/collections\/signes-de-lage\"\u003esigns of aging\u003c\/a\u003e selection.\u003c\/p\u003e","brand":"COSRX","offers":[{"title":"Default Title","offer_id":53801758359818,"sku":"COSRX-6PEPTIDE-150","price":22.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/7152\/3338\/files\/cosrx-6-peptide-serum.jpg?v=1790197347"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/7152\/3338\/collections\/collection-peptides.jpg?v=1790280625","url":"https:\/\/glasskin-beauty.com\/en-us\/collections\/peptides.oembed","provider":"Glasskin Beauty","version":"1.0","type":"link"}